Analysis on Effect of Occlusion of Single Posterior Implant on Vertical Bone Loss with T-Scan

doi:10.13701/j.cnki.kqyxyj.2024.04.013

Abstract

Abstract: Objective: To quantitatively analyze the occlusal contact of single posterior implant prosthesis in the intercuspal position(ICP), and to explore its effect on vertical bone loss around the implant. Methods: Forty patients without a adverse repair phenomena such as early contact and bad habits such as bruxism were selected for conventional implant restoration of the first molar. The T-Scan occlusal analyzer was used to record the difference in occlusal contact between the implant prosthesis and the contralateral homonymous tooth.They were grouped according to occlusal delay time, percentage ratio of occlusal force, peak occlusal force, and occlusal contact area ratio. The effect of occlusion on vertical bone loss(VBL) around the implant was analyzed, and a multiple linear regression model was established. Results: There were significant differences in the average VBL between groups in the comparison of the occlusal delay time and the peak bite force (P<0.05). At the same time, the prediction equation was obtained: Y=1.060-0.734X1 + 0.248X2-0.589X3, where Y is average VBL, X1 is occlusal delay time, X2 is peak bite force, and X3 is occlusal contact area ratio. Conclusion: In addition to considering the appropriate occlusal design in the implant restoration, when adjusting the occlusal contact of implant restorations or during regular occlusal examinations,the application of T-Scan is recommended,to minimize the peak occlusal force (light occlusal contact) at ICP, and to delay the first occlusal contact time of the implant restorations as much as possible, which is extremely beneficial to maintain the stability of the peri-implant bone.

Key words: single posterior tooth, occlusal, occlusal contact, occlusal load, quantitative analysis, vertical bone loss

FANG Li, CHEN Zijun, WANG Yuxi, ZHANG Guanhua, LIU Xiangdong, DENG Banglian, SONG Yingliang. Analysis on Effect of Occlusion of Single Posterior Implant on Vertical Bone Loss with T-Scan[J]. Journal of Oral Science Research, 2024, 40(4): 349-355.

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